./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:42:31,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:42:31,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:42:31,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:42:31,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:42:31,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:42:31,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:42:31,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:42:31,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:42:31,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:42:31,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:42:31,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:42:31,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:42:31,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:42:31,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:42:31,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:42:31,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:42:31,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:42:31,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:42:31,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:42:31,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:42:31,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:42:31,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:42:31,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:42:31,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:42:31,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:42:31,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:42:31,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:42:31,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:42:31,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:42:31,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:42:31,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:42:31,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:42:31,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:42:31,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:42:31,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:42:31,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:42:31,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:42:31,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:42:31,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:42:31,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:42:31,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:42:31,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:42:31,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:42:31,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:42:31,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:42:31,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:42:31,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:42:31,273 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:42:31,274 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:42:31,274 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:42:31,275 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:42:31,275 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:42:31,275 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:42:31,275 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:42:31,275 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:42:31,276 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:42:31,276 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:42:31,276 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:42:31,276 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:42:31,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:42:31,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:42:31,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:42:31,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:42:31,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:42:31,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:42:31,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:42:31,279 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:42:31,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:42:31,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:42:31,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:42:31,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:42:31,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:42:31,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:42:31,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:42:31,280 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:42:31,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:42:31,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:42:31,281 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:42:31,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:42:31,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:42:31,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:42:31,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2022-11-23 15:42:31,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:42:31,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:42:31,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:42:31,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:42:31,634 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:42:31,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2022-11-23 15:42:34,718 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:42:34,994 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:42:34,995 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2022-11-23 15:42:35,002 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/data/e92e83cf7/3d3ab7759dbd48d5bbd4b07ba78002ab/FLAG057467ff7 [2022-11-23 15:42:35,018 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/data/e92e83cf7/3d3ab7759dbd48d5bbd4b07ba78002ab [2022-11-23 15:42:35,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:42:35,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:42:35,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:42:35,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:42:35,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:42:35,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db37969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35, skipping insertion in model container [2022-11-23 15:42:35,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:42:35,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:42:35,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:42:35,187 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:42:35,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:42:35,208 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:42:35,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35 WrapperNode [2022-11-23 15:42:35,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:42:35,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:42:35,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:42:35,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:42:35,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,233 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-11-23 15:42:35,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:42:35,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:42:35,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:42:35,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:42:35,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,254 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:42:35,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:42:35,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:42:35,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:42:35,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (1/1) ... [2022-11-23 15:42:35,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:42:35,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:35,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:42:35,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:42:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:42:35,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:42:35,414 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:42:35,416 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:42:35,499 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:42:35,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:42:35,519 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:42:35,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:35 BoogieIcfgContainer [2022-11-23 15:42:35,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:42:35,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:42:35,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:42:35,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:42:35,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:42:35" (1/3) ... [2022-11-23 15:42:35,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ac8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:35, skipping insertion in model container [2022-11-23 15:42:35,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:35" (2/3) ... [2022-11-23 15:42:35,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ac8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:35, skipping insertion in model container [2022-11-23 15:42:35,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:35" (3/3) ... [2022-11-23 15:42:35,533 INFO L112 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2022-11-23 15:42:35,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:42:35,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 15:42:35,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:42:35,669 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1de04925, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:42:35,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 15:42:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:42:35,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:35,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:42:35,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:35,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:35,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2066791, now seen corresponding path program 1 times [2022-11-23 15:42:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:35,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788997340] [2022-11-23 15:42:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:35,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:35,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:35,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788997340] [2022-11-23 15:42:35,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788997340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:35,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:35,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:42:35,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463458452] [2022-11-23 15:42:35,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:35,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:42:35,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:42:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:35,993 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:36,083 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-23 15:42:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:42:36,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 15:42:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:36,095 INFO L225 Difference]: With dead ends: 40 [2022-11-23 15:42:36,096 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 15:42:36,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:36,122 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:36,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:36,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 15:42:36,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-23 15:42:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-23 15:42:36,169 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 4 [2022-11-23 15:42:36,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:36,169 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-23 15:42:36,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,170 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-23 15:42:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:42:36,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:36,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:42:36,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:42:36,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:36,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2066599, now seen corresponding path program 1 times [2022-11-23 15:42:36,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:36,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986395430] [2022-11-23 15:42:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:36,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:36,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:36,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986395430] [2022-11-23 15:42:36,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986395430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:36,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:36,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:42:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510495611] [2022-11-23 15:42:36,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:36,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:42:36,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:36,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:42:36,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:36,202 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:36,221 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-11-23 15:42:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:42:36,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 15:42:36,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:36,223 INFO L225 Difference]: With dead ends: 26 [2022-11-23 15:42:36,223 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 15:42:36,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:36,225 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:36,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:42:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 15:42:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2022-11-23 15:42:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-11-23 15:42:36,231 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 4 [2022-11-23 15:42:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:36,232 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-11-23 15:42:36,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-11-23 15:42:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:42:36,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:36,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:42:36,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:42:36,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash 64064617, now seen corresponding path program 1 times [2022-11-23 15:42:36,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:36,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78864507] [2022-11-23 15:42:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:36,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:36,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:36,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78864507] [2022-11-23 15:42:36,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78864507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:36,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:36,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:42:36,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537631378] [2022-11-23 15:42:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:36,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:42:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:42:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:36,290 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:36,342 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-23 15:42:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:42:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:42:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:36,343 INFO L225 Difference]: With dead ends: 20 [2022-11-23 15:42:36,343 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 15:42:36,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:36,345 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:36,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:42:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 15:42:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 15:42:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-23 15:42:36,351 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2022-11-23 15:42:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:36,352 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-23 15:42:36,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-23 15:42:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:42:36,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:36,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:42:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:42:36,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:36,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1986003184, now seen corresponding path program 1 times [2022-11-23 15:42:36,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:36,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312380410] [2022-11-23 15:42:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:36,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:36,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312380410] [2022-11-23 15:42:36,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312380410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:36,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:36,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:42:36,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459297911] [2022-11-23 15:42:36,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:36,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:42:36,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:42:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:36,437 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:36,462 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-23 15:42:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:42:36,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 15:42:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:36,464 INFO L225 Difference]: With dead ends: 19 [2022-11-23 15:42:36,464 INFO L226 Difference]: Without dead ends: 18 [2022-11-23 15:42:36,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:36,466 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:36,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:42:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-23 15:42:36,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-23 15:42:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-23 15:42:36,471 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2022-11-23 15:42:36,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:36,472 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-23 15:42:36,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-23 15:42:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:42:36,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:36,473 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:36,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:42:36,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 578676022, now seen corresponding path program 1 times [2022-11-23 15:42:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:36,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030189115] [2022-11-23 15:42:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:36,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030189115] [2022-11-23 15:42:36,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030189115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529903588] [2022-11-23 15:42:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:36,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:36,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:36,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:36,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:42:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:36,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:42:36,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:36,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:36,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529903588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:36,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [984298496] [2022-11-23 15:42:36,880 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:42:36,880 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:36,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:36,890 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:36,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:37,086 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:37,337 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '299#(and (< 50 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483648 |ULTIMATE.start_main_~y~0#1|))' at error location [2022-11-23 15:42:37,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:37,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:37,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2022-11-23 15:42:37,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098362550] [2022-11-23 15:42:37,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:37,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:42:37,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:37,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:42:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-23 15:42:37,358 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:37,494 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-11-23 15:42:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:42:37,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 15:42:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:37,496 INFO L225 Difference]: With dead ends: 34 [2022-11-23 15:42:37,496 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 15:42:37,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:42:37,499 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:37,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 15:42:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-23 15:42:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-23 15:42:37,512 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2022-11-23 15:42:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:37,513 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-23 15:42:37,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-23 15:42:37,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:42:37,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:37,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1] [2022-11-23 15:42:37,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:37,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:37,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash -358707657, now seen corresponding path program 1 times [2022-11-23 15:42:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:37,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917206224] [2022-11-23 15:42:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:37,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917206224] [2022-11-23 15:42:37,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917206224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:37,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409267843] [2022-11-23 15:42:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:37,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:37,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:37,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:37,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:42:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:37,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:42:37,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:37,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:37,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409267843] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:37,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1410397417] [2022-11-23 15:42:37,967 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:42:37,968 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:37,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:37,968 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:37,969 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:38,053 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:38,228 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '481#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2022-11-23 15:42:38,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:38,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:38,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 15:42:38,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525692067] [2022-11-23 15:42:38,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:38,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:42:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:42:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:42:38,230 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:38,299 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2022-11-23 15:42:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:42:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 15:42:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:38,301 INFO L225 Difference]: With dead ends: 78 [2022-11-23 15:42:38,301 INFO L226 Difference]: Without dead ends: 77 [2022-11-23 15:42:38,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:42:38,302 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:38,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 41 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-23 15:42:38,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2022-11-23 15:42:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2022-11-23 15:42:38,340 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 17 [2022-11-23 15:42:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:38,340 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2022-11-23 15:42:38,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2022-11-23 15:42:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 15:42:38,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:38,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:42:38,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:38,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:38,551 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:38,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:38,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1114947233, now seen corresponding path program 1 times [2022-11-23 15:42:38,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:38,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947420117] [2022-11-23 15:42:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:42:38,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:38,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947420117] [2022-11-23 15:42:38,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947420117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:38,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070862413] [2022-11-23 15:42:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:38,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:38,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:38,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:42:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:38,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:42:38,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:38,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:38,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070862413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:38,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2039285312] [2022-11-23 15:42:38,821 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:42:38,821 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:38,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:38,826 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:38,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:38,999 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:39,240 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '767#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:42:39,240 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:39,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:39,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-23 15:42:39,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489462256] [2022-11-23 15:42:39,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:39,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 15:42:39,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:39,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 15:42:39,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-23 15:42:39,242 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:39,321 INFO L93 Difference]: Finished difference Result 159 states and 200 transitions. [2022-11-23 15:42:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:42:39,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-23 15:42:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:39,324 INFO L225 Difference]: With dead ends: 159 [2022-11-23 15:42:39,324 INFO L226 Difference]: Without dead ends: 105 [2022-11-23 15:42:39,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-23 15:42:39,326 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:39,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 34 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-23 15:42:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-23 15:42:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.145631067961165) internal successors, (118), 104 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2022-11-23 15:42:39,342 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 19 [2022-11-23 15:42:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:39,342 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2022-11-23 15:42:39,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2022-11-23 15:42:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-23 15:42:39,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:39,343 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1] [2022-11-23 15:42:39,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:39,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:39,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1789312301, now seen corresponding path program 2 times [2022-11-23 15:42:39,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:39,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579138459] [2022-11-23 15:42:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:39,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:39,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579138459] [2022-11-23 15:42:39,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579138459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:39,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724683275] [2022-11-23 15:42:39,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:39,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:39,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:39,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:39,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:42:39,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-23 15:42:39,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:39,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:42:39,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:39,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:40,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724683275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:40,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1571617743] [2022-11-23 15:42:40,064 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:42:40,064 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:40,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:40,065 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:40,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:40,134 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:40,393 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1333#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2022-11-23 15:42:40,393 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:40,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:40,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-23 15:42:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477342996] [2022-11-23 15:42:40,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 15:42:40,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:40,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 15:42:40,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:42:40,395 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:40,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:40,562 INFO L93 Difference]: Finished difference Result 562 states and 655 transitions. [2022-11-23 15:42:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 15:42:40,563 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-23 15:42:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:40,566 INFO L225 Difference]: With dead ends: 562 [2022-11-23 15:42:40,566 INFO L226 Difference]: Without dead ends: 561 [2022-11-23 15:42:40,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:42:40,568 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:40,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 78 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-23 15:42:40,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 369. [2022-11-23 15:42:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 367 states have (on average 1.1634877384196185) internal successors, (427), 368 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 427 transitions. [2022-11-23 15:42:40,605 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 427 transitions. Word has length 41 [2022-11-23 15:42:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:40,605 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 427 transitions. [2022-11-23 15:42:40,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:40,606 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 427 transitions. [2022-11-23 15:42:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 15:42:40,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:40,608 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 4, 4, 4, 1, 1] [2022-11-23 15:42:40,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 15:42:40,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 15:42:40,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:40,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:40,814 INFO L85 PathProgramCache]: Analyzing trace with hash -419532703, now seen corresponding path program 2 times [2022-11-23 15:42:40,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:40,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970002893] [2022-11-23 15:42:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:40,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 80 proven. 44 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:40,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:40,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970002893] [2022-11-23 15:42:40,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970002893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:40,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353034310] [2022-11-23 15:42:40,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:40,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:40,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:40,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:40,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:42:41,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-23 15:42:41,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:41,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:42:41,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 80 proven. 44 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:41,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 80 proven. 44 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:41,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353034310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:41,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [782294718] [2022-11-23 15:42:41,161 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:42:41,162 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:41,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:41,162 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:41,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:41,287 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:41,572 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2746#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:42:41,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:41,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:41,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-23 15:42:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769221910] [2022-11-23 15:42:41,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:41,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:42:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:42:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:42:41,574 INFO L87 Difference]: Start difference. First operand 369 states and 427 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:41,641 INFO L93 Difference]: Finished difference Result 595 states and 690 transitions. [2022-11-23 15:42:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:42:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-23 15:42:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:41,643 INFO L225 Difference]: With dead ends: 595 [2022-11-23 15:42:41,643 INFO L226 Difference]: Without dead ends: 247 [2022-11-23 15:42:41,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 143 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:42:41,645 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:41,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 56 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-23 15:42:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-11-23 15:42:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 245 states have (on average 1.1346938775510205) internal successors, (278), 246 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 278 transitions. [2022-11-23 15:42:41,673 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 278 transitions. Word has length 55 [2022-11-23 15:42:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:41,678 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 278 transitions. [2022-11-23 15:42:41,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 278 transitions. [2022-11-23 15:42:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 15:42:41,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:41,681 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1] [2022-11-23 15:42:41,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:41,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 15:42:41,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:41,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:41,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1132236789, now seen corresponding path program 3 times [2022-11-23 15:42:41,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:41,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799733100] [2022-11-23 15:42:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:41,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:42,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:42,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799733100] [2022-11-23 15:42:42,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799733100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:42,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325936701] [2022-11-23 15:42:42,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:42:42,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:42,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:42,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:42,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:42:42,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:42:42,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:42,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 15:42:42,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:42,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:42,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325936701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:42,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1442916033] [2022-11-23 15:42:42,938 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:42:42,939 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:42,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:42,939 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:42,939 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:43,001 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:43,496 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4287#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2022-11-23 15:42:43,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:43,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:43,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2022-11-23 15:42:43,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854068081] [2022-11-23 15:42:43,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:43,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 15:42:43,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:43,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 15:42:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=821, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 15:42:43,499 INFO L87 Difference]: Start difference. First operand 247 states and 278 transitions. Second operand has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:43,839 INFO L93 Difference]: Finished difference Result 2228 states and 2599 transitions. [2022-11-23 15:42:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 15:42:43,840 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-23 15:42:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:43,847 INFO L225 Difference]: With dead ends: 2228 [2022-11-23 15:42:43,847 INFO L226 Difference]: Without dead ends: 2227 [2022-11-23 15:42:43,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 230 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=511, Invalid=821, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 15:42:43,849 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 210 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:43,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 174 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:42:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2022-11-23 15:42:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 949. [2022-11-23 15:42:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 947 states have (on average 1.1647307286166844) internal successors, (1103), 948 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1103 transitions. [2022-11-23 15:42:43,904 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1103 transitions. Word has length 89 [2022-11-23 15:42:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:43,904 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1103 transitions. [2022-11-23 15:42:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1103 transitions. [2022-11-23 15:42:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 15:42:43,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:43,906 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 10, 10, 10, 5, 5, 5, 1, 1] [2022-11-23 15:42:43,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:44,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:42:44,115 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash -947455925, now seen corresponding path program 3 times [2022-11-23 15:42:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:44,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042051864] [2022-11-23 15:42:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:44,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 188 proven. 290 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:44,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:44,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042051864] [2022-11-23 15:42:44,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042051864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:44,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799619837] [2022-11-23 15:42:44,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:42:44,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:44,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:44,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:42:44,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:42:44,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:44,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:42:44,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 188 proven. 290 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:44,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 188 proven. 290 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:44,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799619837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:44,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005734734] [2022-11-23 15:42:44,845 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:42:44,846 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:44,846 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:44,846 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:44,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:44,962 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:45,444 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8513#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:42:45,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:45,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:45,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-23 15:42:45,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038900925] [2022-11-23 15:42:45,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:45,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 15:42:45,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:45,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 15:42:45,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=628, Unknown=0, NotChecked=0, Total=930 [2022-11-23 15:42:45,446 INFO L87 Difference]: Start difference. First operand 949 states and 1103 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:45,585 INFO L93 Difference]: Finished difference Result 1483 states and 1728 transitions. [2022-11-23 15:42:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 15:42:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-23 15:42:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:45,589 INFO L225 Difference]: With dead ends: 1483 [2022-11-23 15:42:45,589 INFO L226 Difference]: Without dead ends: 591 [2022-11-23 15:42:45,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 239 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=628, Unknown=0, NotChecked=0, Total=930 [2022-11-23 15:42:45,593 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 89 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:45,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 77 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-23 15:42:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-11-23 15:42:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.137521222410866) internal successors, (670), 590 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 670 transitions. [2022-11-23 15:42:45,613 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 670 transitions. Word has length 91 [2022-11-23 15:42:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:45,615 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 670 transitions. [2022-11-23 15:42:45,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:45,615 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 670 transitions. [2022-11-23 15:42:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-23 15:42:45,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:45,620 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 22, 22, 22, 5, 5, 5, 1, 1] [2022-11-23 15:42:45,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 15:42:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:45,826 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1278869791, now seen corresponding path program 4 times [2022-11-23 15:42:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:45,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284071975] [2022-11-23 15:42:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:45,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 404 proven. 1430 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:46,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:46,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284071975] [2022-11-23 15:42:46,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284071975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:46,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646150192] [2022-11-23 15:42:46,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:42:46,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:46,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:46,607 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:46,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:42:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:46,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 15:42:46,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 404 proven. 1430 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:46,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 404 proven. 1430 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:47,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646150192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:47,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186379212] [2022-11-23 15:42:47,898 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:42:47,899 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:47,899 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:47,899 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:47,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:47,988 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:48,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11930#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:42:48,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:48,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:48,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-23 15:42:48,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42664179] [2022-11-23 15:42:48,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:48,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 15:42:48,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:48,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 15:42:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=1816, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 15:42:48,968 INFO L87 Difference]: Start difference. First operand 591 states and 670 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:49,223 INFO L93 Difference]: Finished difference Result 786 states and 894 transitions. [2022-11-23 15:42:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 15:42:49,224 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-11-23 15:42:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:49,226 INFO L225 Difference]: With dead ends: 786 [2022-11-23 15:42:49,226 INFO L226 Difference]: Without dead ends: 324 [2022-11-23 15:42:49,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 431 SyntacticMatches, 27 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1154, Invalid=1816, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 15:42:49,228 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 236 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:49,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 170 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:42:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-23 15:42:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 309. [2022-11-23 15:42:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.0716612377850163) internal successors, (329), 308 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 329 transitions. [2022-11-23 15:42:49,240 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 329 transitions. Word has length 163 [2022-11-23 15:42:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:49,241 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 329 transitions. [2022-11-23 15:42:49,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 47 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 329 transitions. [2022-11-23 15:42:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-23 15:42:49,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:49,243 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1] [2022-11-23 15:42:49,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:49,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:49,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:49,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1858413957, now seen corresponding path program 4 times [2022-11-23 15:42:49,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:49,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507654824] [2022-11-23 15:42:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:50,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:50,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507654824] [2022-11-23 15:42:50,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507654824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:50,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771188870] [2022-11-23 15:42:50,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:42:50,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:50,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:50,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:50,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:42:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:50,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 15:42:50,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:51,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:52,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771188870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:52,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [873437255] [2022-11-23 15:42:52,763 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:42:52,763 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:52,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:52,763 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:52,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:52,806 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:54,093 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14371#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2022-11-23 15:42:54,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:54,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:54,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2022-11-23 15:42:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4096917] [2022-11-23 15:42:54,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:54,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-23 15:42:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-23 15:42:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=2661, Unknown=0, NotChecked=0, Total=4692 [2022-11-23 15:42:54,098 INFO L87 Difference]: Start difference. First operand 309 states and 329 transitions. Second operand has 64 states, 63 states have (on average 5.873015873015873) internal successors, (370), 63 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:54,623 INFO L93 Difference]: Finished difference Result 1314 states and 1508 transitions. [2022-11-23 15:42:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-23 15:42:54,624 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.873015873015873) internal successors, (370), 63 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2022-11-23 15:42:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:54,633 INFO L225 Difference]: With dead ends: 1314 [2022-11-23 15:42:54,634 INFO L226 Difference]: Without dead ends: 1313 [2022-11-23 15:42:54,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 486 SyntacticMatches, 31 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3280 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2031, Invalid=2661, Unknown=0, NotChecked=0, Total=4692 [2022-11-23 15:42:54,637 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 219 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:54,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 377 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:42:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-11-23 15:42:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1279. [2022-11-23 15:42:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1277 states have (on average 1.1386061080657792) internal successors, (1454), 1278 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1454 transitions. [2022-11-23 15:42:54,683 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1454 transitions. Word has length 185 [2022-11-23 15:42:54,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:54,683 INFO L495 AbstractCegarLoop]: Abstraction has 1279 states and 1454 transitions. [2022-11-23 15:42:54,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.873015873015873) internal successors, (370), 63 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1454 transitions. [2022-11-23 15:42:54,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-23 15:42:54,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:54,689 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 50, 46, 46, 46, 5, 5, 5, 1, 1] [2022-11-23 15:42:54,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:54,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 15:42:54,895 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:42:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash 829290183, now seen corresponding path program 5 times [2022-11-23 15:42:54,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:54,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049226531] [2022-11-23 15:42:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:54,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7190 backedges. 836 proven. 6302 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:42:57,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:57,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049226531] [2022-11-23 15:42:57,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049226531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:57,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264324074] [2022-11-23 15:42:57,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:57,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:57,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:57,500 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:57,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:42:57,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-23 15:42:57,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:57,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:42:57,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7190 backedges. 1090 proven. 70 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2022-11-23 15:42:57,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7190 backedges. 1090 proven. 70 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2022-11-23 15:42:58,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264324074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:58,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1325947985] [2022-11-23 15:42:58,368 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:42:58,368 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:58,368 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:58,369 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:58,369 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:58,454 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:00,933 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19256#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:43:00,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:00,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:00,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 7, 7] total 61 [2022-11-23 15:43:00,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311251819] [2022-11-23 15:43:00,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:00,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-23 15:43:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-23 15:43:00,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1867, Invalid=2689, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 15:43:00,940 INFO L87 Difference]: Start difference. First operand 1279 states and 1454 transitions. Second operand has 61 states, 61 states have (on average 5.950819672131147) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:01,408 INFO L93 Difference]: Finished difference Result 3277 states and 3958 transitions. [2022-11-23 15:43:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-23 15:43:01,409 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.950819672131147) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 307 [2022-11-23 15:43:01,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:01,418 INFO L225 Difference]: With dead ends: 3277 [2022-11-23 15:43:01,418 INFO L226 Difference]: Without dead ends: 2271 [2022-11-23 15:43:01,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 850 SyntacticMatches, 51 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4050 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1867, Invalid=2689, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 15:43:01,422 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 709 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:01,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 195 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:43:01,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2022-11-23 15:43:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2271. [2022-11-23 15:43:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2269 states have (on average 1.148964301454385) internal successors, (2607), 2270 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2607 transitions. [2022-11-23 15:43:01,546 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2607 transitions. Word has length 307 [2022-11-23 15:43:01,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:01,547 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 2607 transitions. [2022-11-23 15:43:01,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.950819672131147) internal successors, (363), 61 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:01,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2607 transitions. [2022-11-23 15:43:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-23 15:43:01,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:01,566 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 59, 48, 48, 48, 12, 12, 12, 1, 1] [2022-11-23 15:43:01,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:43:01,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 15:43:01,771 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:43:01,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:01,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1306662320, now seen corresponding path program 6 times [2022-11-23 15:43:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:01,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916203590] [2022-11-23 15:43:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9468 backedges. 2230 proven. 6864 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-23 15:43:04,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:04,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916203590] [2022-11-23 15:43:04,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916203590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:04,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344935236] [2022-11-23 15:43:04,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:43:04,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:04,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:04,197 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:04,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 15:43:04,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:43:04,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:43:04,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-23 15:43:04,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9468 backedges. 2230 proven. 6864 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-23 15:43:04,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9468 backedges. 2230 proven. 6864 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-23 15:43:06,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344935236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:06,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1239622434] [2022-11-23 15:43:06,357 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:43:06,357 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:43:06,357 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:43:06,358 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:43:06,358 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:06,455 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:09,264 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27903#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:43:09,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:09,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:09,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2022-11-23 15:43:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124717558] [2022-11-23 15:43:09,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:09,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-23 15:43:09,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-23 15:43:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=2136, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 15:43:09,268 INFO L87 Difference]: Start difference. First operand 2271 states and 2607 transitions. Second operand has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:09,564 INFO L93 Difference]: Finished difference Result 4275 states and 4950 transitions. [2022-11-23 15:43:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-23 15:43:09,565 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2022-11-23 15:43:09,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:09,572 INFO L225 Difference]: With dead ends: 4275 [2022-11-23 15:43:09,572 INFO L226 Difference]: Without dead ends: 2289 [2022-11-23 15:43:09,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 966 SyntacticMatches, 107 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4682 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1404, Invalid=2136, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 15:43:09,576 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 205 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:09,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 177 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:43:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2022-11-23 15:43:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2022-11-23 15:43:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.1477918670747704) internal successors, (2625), 2288 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 2625 transitions. [2022-11-23 15:43:09,664 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 2625 transitions. Word has length 361 [2022-11-23 15:43:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:09,664 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 2625 transitions. [2022-11-23 15:43:09,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.886792452830188) internal successors, (312), 52 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 2625 transitions. [2022-11-23 15:43:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-23 15:43:09,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:09,672 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 1, 1] [2022-11-23 15:43:09,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 15:43:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 15:43:09,878 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:43:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1330253989, now seen corresponding path program 5 times [2022-11-23 15:43:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:09,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091728313] [2022-11-23 15:43:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:13,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:13,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091728313] [2022-11-23 15:43:13,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091728313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:13,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638815241] [2022-11-23 15:43:13,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:43:13,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:13,342 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:13,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 15:43:13,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-11-23 15:43:13,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:43:13,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-23 15:43:13,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:14,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:19,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638815241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1575011553] [2022-11-23 15:43:19,416 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:43:19,417 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:43:19,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:43:19,417 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:43:19,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:19,460 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:23,014 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37911#(and (<= |ULTIMATE.start_main_~x~0#1| 50) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< 2147483646 |ULTIMATE.start_main_~y~0#1|))' at error location [2022-11-23 15:43:23,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:23,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:23,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2022-11-23 15:43:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724784955] [2022-11-23 15:43:23,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-23 15:43:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-23 15:43:23,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8143, Invalid=9413, Unknown=0, NotChecked=0, Total=17556 [2022-11-23 15:43:23,023 INFO L87 Difference]: Start difference. First operand 2289 states and 2625 transitions. Second operand has 128 states, 127 states have (on average 5.937007874015748) internal successors, (754), 127 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:26,763 INFO L93 Difference]: Finished difference Result 70292 states and 82176 transitions. [2022-11-23 15:43:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-23 15:43:26,764 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.937007874015748) internal successors, (754), 127 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2022-11-23 15:43:26,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:26,943 INFO L225 Difference]: With dead ends: 70292 [2022-11-23 15:43:26,943 INFO L226 Difference]: Without dead ends: 70291 [2022-11-23 15:43:26,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 998 SyntacticMatches, 63 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12720 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=8143, Invalid=9413, Unknown=0, NotChecked=0, Total=17556 [2022-11-23 15:43:26,963 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 973 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:26,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 898 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:43:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70291 states. [2022-11-23 15:43:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70291 to 9065. [2022-11-23 15:43:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9065 states, 9063 states have (on average 1.164956416197727) internal successors, (10558), 9064 states have internal predecessors, (10558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9065 states to 9065 states and 10558 transitions. [2022-11-23 15:43:29,132 INFO L78 Accepts]: Start accepts. Automaton has 9065 states and 10558 transitions. Word has length 377 [2022-11-23 15:43:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:29,133 INFO L495 AbstractCegarLoop]: Abstraction has 9065 states and 10558 transitions. [2022-11-23 15:43:29,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.937007874015748) internal successors, (754), 127 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 9065 states and 10558 transitions. [2022-11-23 15:43:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-23 15:43:29,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:29,141 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 62, 51, 51, 51, 12, 12, 12, 1, 1] [2022-11-23 15:43:29,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:43:29,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 15:43:29,348 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:43:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:29,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1664317445, now seen corresponding path program 7 times [2022-11-23 15:43:29,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:29,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328879009] [2022-11-23 15:43:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:29,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10494 backedges. 0 proven. 10494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:32,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:32,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328879009] [2022-11-23 15:43:32,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328879009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:32,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603705737] [2022-11-23 15:43:32,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:43:32,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:32,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:32,592 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:32,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:43:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:32,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-23 15:43:32,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10494 backedges. 0 proven. 10494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:33,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10494 backedges. 0 proven. 10494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:43:38,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603705737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:38,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [563490847] [2022-11-23 15:43:38,824 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:43:38,824 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:43:38,824 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:43:38,825 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:43:38,825 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:38,923 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:41,948 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '132313#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:43:41,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:41,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:41,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2022-11-23 15:43:41,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670626464] [2022-11-23 15:43:41,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:41,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-23 15:43:41,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-23 15:43:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8229, Invalid=9861, Unknown=0, NotChecked=0, Total=18090 [2022-11-23 15:43:41,955 INFO L87 Difference]: Start difference. First operand 9065 states and 10558 transitions. Second operand has 128 states, 127 states have (on average 5.968503937007874) internal successors, (758), 127 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:45,058 INFO L93 Difference]: Finished difference Result 25118 states and 31994 transitions. [2022-11-23 15:43:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-23 15:43:45,059 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.968503937007874) internal successors, (758), 127 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2022-11-23 15:43:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:45,154 INFO L225 Difference]: With dead ends: 25118 [2022-11-23 15:43:45,154 INFO L226 Difference]: Without dead ends: 25117 [2022-11-23 15:43:45,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1002 SyntacticMatches, 63 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13911 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=8229, Invalid=9861, Unknown=0, NotChecked=0, Total=18090 [2022-11-23 15:43:45,161 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1610 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:45,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 394 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:43:45,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25117 states. [2022-11-23 15:43:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25117 to 25117. [2022-11-23 15:43:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25117 states, 25115 states have (on average 1.1647222775233923) internal successors, (29252), 25116 states have internal predecessors, (29252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25117 states to 25117 states and 29252 transitions. [2022-11-23 15:43:46,652 INFO L78 Accepts]: Start accepts. Automaton has 25117 states and 29252 transitions. Word has length 379 [2022-11-23 15:43:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:46,652 INFO L495 AbstractCegarLoop]: Abstraction has 25117 states and 29252 transitions. [2022-11-23 15:43:46,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 5.968503937007874) internal successors, (758), 127 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:43:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 25117 states and 29252 transitions. [2022-11-23 15:43:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2022-11-23 15:43:46,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:46,692 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 126, 126, 126, 1, 1] [2022-11-23 15:43:46,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 15:43:46,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 15:43:46,897 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:43:46,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:46,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1411573477, now seen corresponding path program 6 times [2022-11-23 15:43:46,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:46,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301778476] [2022-11-23 15:43:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 47754 backedges. 0 proven. 47754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:00,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:00,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301778476] [2022-11-23 15:44:00,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301778476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:44:00,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064599128] [2022-11-23 15:44:00,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:44:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:00,079 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:44:00,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 15:44:00,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:44:00,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:44:00,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-23 15:44:00,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:44:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 47754 backedges. 30954 proven. 0 refuted. 0 times theorem prover too weak. 16800 trivial. 0 not checked. [2022-11-23 15:44:04,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:44:04,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064599128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:44:04,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:44:04,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [127] total 180 [2022-11-23 15:44:04,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903633046] [2022-11-23 15:44:04,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:44:04,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-23 15:44:04,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-23 15:44:04,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2022-11-23 15:44:04,768 INFO L87 Difference]: Start difference. First operand 25117 states and 29252 transitions. Second operand has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:05,301 INFO L93 Difference]: Finished difference Result 25578 states and 29789 transitions. [2022-11-23 15:44:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-23 15:44:05,302 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 761 [2022-11-23 15:44:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:05,304 INFO L225 Difference]: With dead ends: 25578 [2022-11-23 15:44:05,305 INFO L226 Difference]: Without dead ends: 764 [2022-11-23 15:44:05,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=9686, Invalid=22894, Unknown=0, NotChecked=0, Total=32580 [2022-11-23 15:44:05,330 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 21 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:05,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 627 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:44:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-23 15:44:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2022-11-23 15:44:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 1.001310615989515) internal successors, (764), 763 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 764 transitions. [2022-11-23 15:44:05,377 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 764 transitions. Word has length 761 [2022-11-23 15:44:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:05,378 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 764 transitions. [2022-11-23 15:44:05,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:05,379 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 764 transitions. [2022-11-23 15:44:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2022-11-23 15:44:05,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:05,390 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 126, 76, 76, 76, 51, 51, 51, 1, 1] [2022-11-23 15:44:05,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-23 15:44:05,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 15:44:05,597 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:44:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:05,597 INFO L85 PathProgramCache]: Analyzing trace with hash 860533573, now seen corresponding path program 8 times [2022-11-23 15:44:05,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:05,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039176346] [2022-11-23 15:44:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:05,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 40254 backedges. 0 proven. 40254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:44:18,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039176346] [2022-11-23 15:44:18,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039176346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:44:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684168920] [2022-11-23 15:44:18,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:44:18,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:18,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:18,760 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:44:18,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 15:44:19,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2022-11-23 15:44:19,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:44:19,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-23 15:44:19,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:44:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 40254 backedges. 15552 proven. 17252 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2022-11-23 15:44:19,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:44:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 40254 backedges. 15552 proven. 17252 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2022-11-23 15:44:30,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684168920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:44:30,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1028766814] [2022-11-23 15:44:30,943 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:44:30,943 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:44:30,944 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:44:30,944 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:44:30,944 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:44:31,018 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:44:38,672 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '228891#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:44:38,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:44:38,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:44:38,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 78, 78] total 205 [2022-11-23 15:44:38,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629490771] [2022-11-23 15:44:38,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:44:38,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2022-11-23 15:44:38,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2022-11-23 15:44:38,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21294, Invalid=23862, Unknown=0, NotChecked=0, Total=45156 [2022-11-23 15:44:38,686 INFO L87 Difference]: Start difference. First operand 764 states and 764 transitions. Second operand has 206 states, 205 states have (on average 6.009756097560976) internal successors, (1232), 206 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:43,898 INFO L93 Difference]: Finished difference Result 1233 states and 1310 transitions. [2022-11-23 15:44:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2022-11-23 15:44:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 205 states have (on average 6.009756097560976) internal successors, (1232), 206 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 763 [2022-11-23 15:44:43,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:43,902 INFO L225 Difference]: With dead ends: 1233 [2022-11-23 15:44:43,902 INFO L226 Difference]: Without dead ends: 1232 [2022-11-23 15:44:43,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2414 GetRequests, 2076 SyntacticMatches, 127 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41727 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=21294, Invalid=23862, Unknown=0, NotChecked=0, Total=45156 [2022-11-23 15:44:43,907 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 971 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:43,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 622 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:44:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-11-23 15:44:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2022-11-23 15:44:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 1.0008123476848092) internal successors, (1232), 1231 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:43,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1232 transitions. [2022-11-23 15:44:43,956 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1232 transitions. Word has length 763 [2022-11-23 15:44:43,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:43,958 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1232 transitions. [2022-11-23 15:44:43,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 205 states have (on average 6.009756097560976) internal successors, (1232), 206 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:44:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1232 transitions. [2022-11-23 15:44:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1232 [2022-11-23 15:44:43,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:43,973 INFO L195 NwaCegarLoop]: trace histogram [205, 205, 204, 154, 154, 154, 51, 51, 51, 1, 1] [2022-11-23 15:44:43,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 15:44:44,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:44,181 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:44:44,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:44,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1449021435, now seen corresponding path program 9 times [2022-11-23 15:44:44,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:44,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949127746] [2022-11-23 15:44:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:44,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 109752 backedges. 0 proven. 109752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:22,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:22,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949127746] [2022-11-23 15:45:22,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949127746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:22,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366608522] [2022-11-23 15:45:22,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:45:22,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:22,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:22,412 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:22,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 15:45:22,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:45:22,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:45:22,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-23 15:45:22,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 109752 backedges. 65993 proven. 12752 refuted. 0 times theorem prover too weak. 31007 trivial. 0 not checked. [2022-11-23 15:45:29,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:45:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 109752 backedges. 65993 proven. 12752 refuted. 0 times theorem prover too weak. 31007 trivial. 0 not checked. [2022-11-23 15:45:41,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366608522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:45:41,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [814815808] [2022-11-23 15:45:41,167 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 15:45:41,167 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:45:41,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:45:41,168 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:45:41,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:45:41,263 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:46:05,825 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '239413#(< 2147483646 |ULTIMATE.start_main_~x~0#1|)' at error location [2022-11-23 15:46:05,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:46:05,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:46:05,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 54, 54] total 259 [2022-11-23 15:46:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753992715] [2022-11-23 15:46:05,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:46:05,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 260 states [2022-11-23 15:46:05,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:05,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2022-11-23 15:46:05,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22985, Invalid=48037, Unknown=0, NotChecked=0, Total=71022 [2022-11-23 15:46:05,836 INFO L87 Difference]: Start difference. First operand 1232 states and 1232 transitions. Second operand has 260 states, 260 states have (on average 6.565384615384615) internal successors, (1707), 259 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:46:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:24,472 INFO L93 Difference]: Finished difference Result 1232 states and 1232 transitions. [2022-11-23 15:46:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-11-23 15:46:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 260 states, 260 states have (on average 6.565384615384615) internal successors, (1707), 259 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1231 [2022-11-23 15:46:24,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:24,474 INFO L225 Difference]: With dead ends: 1232 [2022-11-23 15:46:24,474 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:46:24,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4103 GetRequests, 3322 SyntacticMatches, 309 SemanticMatches, 472 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120031 ImplicationChecksByTransitivity, 70.7s TimeCoverageRelationStatistics Valid=71348, Invalid=152854, Unknown=0, NotChecked=0, Total=224202 [2022-11-23 15:46:24,496 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 867 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:24,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 0 Invalid, 3171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3111 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 15:46:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:46:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:46:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:46:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:46:24,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1231 [2022-11-23 15:46:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:24,498 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:46:24,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 260 states, 260 states have (on average 6.565384615384615) internal successors, (1707), 259 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:46:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:46:24,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:46:24,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-23 15:46:24,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-23 15:46:24,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-23 15:46:24,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-23 15:46:24,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-23 15:46:24,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-23 15:46:24,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 15:46:24,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:24,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:46:27,145 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2022-11-23 15:46:27,145 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:46:27,145 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-23 15:46:27,145 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-23 15:46:27,145 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2022-11-23 15:46:27,146 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2022-11-23 15:46:27,146 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2022-11-23 15:46:27,146 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-23 15:46:27,146 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:46:27,146 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-23 15:46:27,146 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-11-23 15:46:27,146 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-11-23 15:46:27,147 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-23 15:46:27,147 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-23 15:46:27,147 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-23 15:46:27,149 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse6 (<= |ULTIMATE.start_main_~y~0#1| 32)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 44)) (.cse5 (<= |ULTIMATE.start_main_~y~0#1| 9)) (.cse9 (<= |ULTIMATE.start_main_~y~0#1| 27)) (.cse14 (<= |ULTIMATE.start_main_~y~0#1| 42)) (.cse21 (<= |ULTIMATE.start_main_~y~0#1| 25)) (.cse7 (<= |ULTIMATE.start_main_~y~0#1| 4)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse25 (<= |ULTIMATE.start_main_~y~0#1| 36)) (.cse33 (<= |ULTIMATE.start_main_~y~0#1| 31)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 6)) (.cse26 (<= |ULTIMATE.start_main_~y~0#1| 49)) (.cse36 (<= |ULTIMATE.start_main_~y~0#1| 13)) (.cse24 (<= |ULTIMATE.start_main_~y~0#1| 45)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 19)) (.cse27 (<= |ULTIMATE.start_main_~y~0#1| 20)) (.cse16 (<= |ULTIMATE.start_main_~y~0#1| 30)) (.cse35 (<= |ULTIMATE.start_main_~y~0#1| 23)) (.cse32 (<= |ULTIMATE.start_main_~y~0#1| 14)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse42 (<= |ULTIMATE.start_main_~y~0#1| 17)) (.cse44 (<= |ULTIMATE.start_main_~y~0#1| 40)) (.cse17 (<= |ULTIMATE.start_main_~y~0#1| 10)) (.cse22 (<= |ULTIMATE.start_main_~y~0#1| 28)) (.cse46 (<= |ULTIMATE.start_main_~y~0#1| 47)) (.cse40 (<= |ULTIMATE.start_main_~y~0#1| 46)) (.cse10 (<= |ULTIMATE.start_main_~y~0#1| 3)) (.cse47 (<= |ULTIMATE.start_main_~y~0#1| 16)) (.cse12 (<= |ULTIMATE.start_main_~y~0#1| 22)) (.cse45 (<= |ULTIMATE.start_main_~y~0#1| 21)) (.cse34 (<= |ULTIMATE.start_main_~y~0#1| 24)) (.cse29 (<= |ULTIMATE.start_main_~y~0#1| 7)) (.cse11 (<= |ULTIMATE.start_main_~y~0#1| 43)) (.cse30 (<= |ULTIMATE.start_main_~y~0#1| 26)) (.cse15 (<= |ULTIMATE.start_main_~y~0#1| 0)) (.cse41 (<= |ULTIMATE.start_main_~y~0#1| 18)) (.cse31 (<= |ULTIMATE.start_main_~y~0#1| 48)) (.cse2 (<= |ULTIMATE.start_main_~y~0#1| 50)) (.cse18 (<= |ULTIMATE.start_main_~y~0#1| 8)) (.cse43 (<= |ULTIMATE.start_main_~y~0#1| 34)) (.cse49 (<= |ULTIMATE.start_main_~y~0#1| 5)) (.cse50 (<= |ULTIMATE.start_main_~y~0#1| 35)) (.cse28 (<= |ULTIMATE.start_main_~y~0#1| 11)) (.cse38 (<= |ULTIMATE.start_main_~y~0#1| 12)) (.cse39 (<= |ULTIMATE.start_main_~y~0#1| 39)) (.cse37 (<= |ULTIMATE.start_main_~y~0#1| 38)) (.cse48 (<= |ULTIMATE.start_main_~y~0#1| 33)) (.cse19 (<= |ULTIMATE.start_main_~y~0#1| 29)) (.cse20 (<= |ULTIMATE.start_main_~y~0#1| 41)) (.cse51 (<= |ULTIMATE.start_main_~y~0#1| 15)) (.cse0 (<= 51 |ULTIMATE.start_main_~x~0#1|)) (.cse23 (<= |ULTIMATE.start_main_~y~0#1| 37))) (or (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 83) .cse1) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 52) .cse2) (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3) (and .cse4 (<= |ULTIMATE.start_main_~x~0#1| 96) .cse0) (and .cse5 (<= 9 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9)) (and .cse6 (<= 32 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 32)) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 51) (<= |ULTIMATE.start_main_~y~0#1| 51)) (and .cse7 (<= |ULTIMATE.start_main_~x~0#1| 4) (<= 4 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 70) .cse6 .cse0) (and .cse8 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 58)) (and .cse9 (<= 27 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 27)) (and .cse0 .cse10 (<= |ULTIMATE.start_main_~x~0#1| 99)) (and .cse11 (<= 43 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 43)) (and (<= |ULTIMATE.start_main_~x~0#1| 22) (<= 22 |ULTIMATE.start_main_~x~0#1|) .cse12) (and .cse13 (<= |ULTIMATE.start_main_~x~0#1| 100) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 60) .cse14 .cse0) (and .cse8 (<= |ULTIMATE.start_main_~x~0#1| 44) (<= 44 |ULTIMATE.start_main_~x~0#1|)) (and .cse15 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 102)) (and (<= |ULTIMATE.start_main_~x~0#1| 72) .cse16 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 92) .cse17 .cse0) (and .cse5 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 93)) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 94) .cse18) (and (<= |ULTIMATE.start_main_~x~0#1| 29) (<= 29 |ULTIMATE.start_main_~x~0#1|) .cse19) (and (<= |ULTIMATE.start_main_~x~0#1| 41) .cse20 (<= 41 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 25) .cse21 (<= 25 |ULTIMATE.start_main_~x~0#1|)) (and .cse22 (<= |ULTIMATE.start_main_~x~0#1| 28) (<= 28 |ULTIMATE.start_main_~x~0#1|)) (and .cse23 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 65)) (and .cse24 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 57)) (and (<= |ULTIMATE.start_main_~x~0#1| 66) .cse0 .cse25) (and (<= |ULTIMATE.start_main_~x~0#1| 49) (<= 49 |ULTIMATE.start_main_~x~0#1|) .cse26) (and (<= 20 |ULTIMATE.start_main_~x~0#1|) .cse27 (<= |ULTIMATE.start_main_~x~0#1| 20)) (and (<= |ULTIMATE.start_main_~x~0#1| 75) .cse9 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 11) (<= 11 |ULTIMATE.start_main_~x~0#1|) .cse28) (and (<= 7 |ULTIMATE.start_main_~x~0#1|) .cse29 (<= |ULTIMATE.start_main_~x~0#1| 7)) (and .cse30 (<= |ULTIMATE.start_main_~x~0#1| 76) .cse0) (and (<= 42 |ULTIMATE.start_main_~x~0#1|) .cse14 (<= |ULTIMATE.start_main_~x~0#1| 42)) (and (<= |ULTIMATE.start_main_~x~0#1| 48) .cse31 (<= 48 |ULTIMATE.start_main_~x~0#1|)) (and .cse32 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 88)) (and (<= |ULTIMATE.start_main_~x~0#1| 31) (<= 31 |ULTIMATE.start_main_~x~0#1|) .cse33) (and (<= |ULTIMATE.start_main_~x~0#1| 77) .cse21 .cse0) (and .cse34 (<= |ULTIMATE.start_main_~x~0#1| 78) .cse0) (and (<= 23 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 23) .cse35) (and .cse7 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 98)) (and (<= |ULTIMATE.start_main_~x~0#1| 89) .cse0 .cse36) (and .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 101)) (and (<= |ULTIMATE.start_main_~x~0#1| 36) (<= 36 |ULTIMATE.start_main_~x~0#1|) .cse25) (and (<= |ULTIMATE.start_main_~x~0#1| 71) .cse0 .cse33) (and .cse37 (<= |ULTIMATE.start_main_~x~0#1| 38) (<= 38 |ULTIMATE.start_main_~x~0#1|)) (and .cse38 (<= |ULTIMATE.start_main_~x~0#1| 12) (<= 12 |ULTIMATE.start_main_~x~0#1|)) (and (<= 6 |ULTIMATE.start_main_~x~0#1|) .cse4 (<= |ULTIMATE.start_main_~x~0#1| 6)) (and (<= |ULTIMATE.start_main_~x~0#1| 53) .cse26 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 13) .cse36 (<= 13 |ULTIMATE.start_main_~x~0#1|)) (and (<= 39 |ULTIMATE.start_main_~x~0#1|) .cse39 (<= |ULTIMATE.start_main_~x~0#1| 39)) (and .cse24 (<= |ULTIMATE.start_main_~x~0#1| 45) (<= 45 |ULTIMATE.start_main_~x~0#1|)) (and (<= 19 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 19) .cse1) (and (<= 46 |ULTIMATE.start_main_~x~0#1|) .cse40 (<= |ULTIMATE.start_main_~x~0#1| 46)) (and (<= |ULTIMATE.start_main_~x~0#1| 84) .cse41 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 82) .cse27 .cse0) (and (<= 17 |ULTIMATE.start_main_~x~0#1|) .cse42 (<= |ULTIMATE.start_main_~x~0#1| 17)) (and (<= |ULTIMATE.start_main_~x~0#1| 30) .cse16 (<= 30 |ULTIMATE.start_main_~x~0#1|)) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 79) .cse35) (and (<= |ULTIMATE.start_main_~x~0#1| 14) .cse32 (<= 14 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 68) .cse0 .cse43) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) .cse13 (<= |ULTIMATE.start_main_~x~0#1| 2)) (and .cse44 (<= 40 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 40)) (and (<= 21 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 21) .cse45) (and (<= |ULTIMATE.start_main_~x~0#1| 85) .cse42 .cse0) (and .cse46 (<= |ULTIMATE.start_main_~x~0#1| 55) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 16) .cse47 (<= 16 |ULTIMATE.start_main_~x~0#1|)) (and .cse44 (<= |ULTIMATE.start_main_~x~0#1| 62) .cse0) (and .cse17 (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 10 |ULTIMATE.start_main_~x~0#1|)) (and .cse22 (<= |ULTIMATE.start_main_~x~0#1| 74) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 47) .cse46 (<= 47 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 56) .cse40 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 3) .cse10 (<= 3 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 86) .cse0 .cse47) (and .cse0 .cse12 (<= |ULTIMATE.start_main_~x~0#1| 80)) (and .cse45 (<= |ULTIMATE.start_main_~x~0#1| 81) .cse0) (and .cse34 (<= 24 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 24)) (and .cse48 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 69)) (and .cse29 (<= |ULTIMATE.start_main_~x~0#1| 95) .cse0) (and .cse11 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 59)) (and .cse30 (<= |ULTIMATE.start_main_~x~0#1| 26) (<= 26 |ULTIMATE.start_main_~x~0#1|)) (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse15 (<= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse41 (<= |ULTIMATE.start_main_~x~0#1| 18) (<= 18 |ULTIMATE.start_main_~x~0#1|)) (and .cse31 (<= |ULTIMATE.start_main_~x~0#1| 54) .cse0) (and (<= 50 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) .cse2) (and (<= 5 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 5) .cse49) (and (<= |ULTIMATE.start_main_~x~0#1| 35) .cse50 (<= 35 |ULTIMATE.start_main_~x~0#1|)) (and (<= 8 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 8) .cse18) (and (<= 34 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 34) .cse43) (and .cse49 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 97)) (and (<= |ULTIMATE.start_main_~x~0#1| 67) .cse50 .cse0) (and (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (<= |ULTIMATE.start_main_~x~0#1| 103) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 91) .cse28 .cse0) (and .cse51 (<= |ULTIMATE.start_main_~x~0#1| 15) (<= 15 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 90) .cse38 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 63) .cse39 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 64) .cse37 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 33) .cse48 (<= 33 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 73) .cse19 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 61) .cse0 .cse20) (and .cse51 (<= |ULTIMATE.start_main_~x~0#1| 87) .cse0) (and .cse23 (<= |ULTIMATE.start_main_~x~0#1| 37) (<= 37 |ULTIMATE.start_main_~x~0#1|)))) [2022-11-23 15:46:27,153 INFO L444 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1, 1, 1] [2022-11-23 15:46:27,155 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:46:27,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:46:27 BoogieIcfgContainer [2022-11-23 15:46:27,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:46:27,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:46:27,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:46:27,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:46:27,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:35" (3/4) ... [2022-11-23 15:46:27,193 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:46:27,203 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-23 15:46:27,203 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 15:46:27,203 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 15:46:27,235 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:46:27,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:46:27,236 INFO L158 Benchmark]: Toolchain (without parser) took 232213.75ms. Allocated memory was 146.8MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 114.2MB in the beginning and 917.9MB in the end (delta: -803.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-23 15:46:27,236 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 146.8MB. Free memory was 115.5MB in the beginning and 115.3MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:46:27,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.75ms. Allocated memory is still 146.8MB. Free memory was 114.2MB in the beginning and 104.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 15:46:27,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.24ms. Allocated memory is still 146.8MB. Free memory was 104.9MB in the beginning and 103.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:46:27,237 INFO L158 Benchmark]: Boogie Preprocessor took 21.35ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 102.6MB in the end (delta: 810.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:46:27,237 INFO L158 Benchmark]: RCFGBuilder took 266.09ms. Allocated memory is still 146.8MB. Free memory was 102.2MB in the beginning and 92.8MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 15:46:27,238 INFO L158 Benchmark]: TraceAbstraction took 231663.67ms. Allocated memory was 146.8MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 92.3MB in the beginning and 920.0MB in the end (delta: -827.6MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-23 15:46:27,238 INFO L158 Benchmark]: Witness Printer took 45.85ms. Allocated memory is still 2.0GB. Free memory was 920.0MB in the beginning and 917.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:46:27,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 146.8MB. Free memory was 115.5MB in the beginning and 115.3MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.75ms. Allocated memory is still 146.8MB. Free memory was 114.2MB in the beginning and 104.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.24ms. Allocated memory is still 146.8MB. Free memory was 104.9MB in the beginning and 103.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.35ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 102.6MB in the end (delta: 810.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 266.09ms. Allocated memory is still 146.8MB. Free memory was 102.2MB in the beginning and 92.8MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 231663.67ms. Allocated memory was 146.8MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 92.3MB in the beginning and 920.0MB in the end (delta: -827.6MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 45.85ms. Allocated memory is still 2.0GB. Free memory was 920.0MB in the beginning and 917.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 231.5s, OverallIterations: 20, TraceHistogramMax: 205, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 34.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6359 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6359 mSDsluCounter, 3979 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3552 mSDsCounter, 1377 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7198 IncrementalHoareTripleChecker+Invalid, 8575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1377 mSolverCounterUnsat, 427 mSDtfsCounter, 7198 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14000 GetRequests, 11652 SyntacticMatches, 832 SemanticMatches, 1516 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211588 ImplicationChecksByTransitivity, 143.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25117occurred in iteration=17, InterpolantAutomatonStates: 1072, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 62762 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 105 NumberOfFragments, 1046 HoareAnnotationTreeSize, 1 FomulaSimplifications, 11320 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 132.8s InterpolantComputationTime, 9719 NumberOfCodeBlocks, 9467 NumberOfCodeBlocksAsserted, 195 NumberOfCheckSat, 13757 ConstructedInterpolants, 0 QuantifiedInterpolants, 34637 SizeOfPredicates, 0 NumberOfNonLiveVariables, 7696 ConjunctsInSsa, 530 ConjunctsInUnsatCore, 51 InterpolantComputations, 5 PerfectInterpolantSequences, 313194/679968 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((51 <= x && x <= 83) && y <= 19) || ((51 <= x && x <= 52) && y <= 50)) || ((x <= 1 && 1 <= x) && y <= 1)) || ((y <= 6 && x <= 96) && 51 <= x)) || ((y <= 9 && 9 <= x) && x <= 9)) || ((y <= 32 && 32 <= x) && x <= 32)) || ((51 <= x && x <= 51) && y <= 51)) || ((y <= 4 && x <= 4) && 4 <= x)) || ((x <= 70 && y <= 32) && 51 <= x)) || ((y <= 44 && 51 <= x) && x <= 58)) || ((y <= 27 && 27 <= x) && x <= 27)) || ((51 <= x && y <= 3) && x <= 99)) || ((y <= 43 && 43 <= x) && x <= 43)) || ((x <= 22 && 22 <= x) && y <= 22)) || ((y <= 2 && x <= 100) && 51 <= x)) || ((x <= 60 && y <= 42) && 51 <= x)) || ((y <= 44 && x <= 44) && 44 <= x)) || ((y <= 0 && 51 <= x) && x <= 102)) || ((x <= 72 && y <= 30) && 51 <= x)) || ((x <= 92 && y <= 10) && 51 <= x)) || ((y <= 9 && 51 <= x) && x <= 93)) || ((51 <= x && x <= 94) && y <= 8)) || ((x <= 29 && 29 <= x) && y <= 29)) || ((x <= 41 && y <= 41) && 41 <= x)) || ((x <= 25 && y <= 25) && 25 <= x)) || ((y <= 28 && x <= 28) && 28 <= x)) || ((y <= 37 && 51 <= x) && x <= 65)) || ((y <= 45 && 51 <= x) && x <= 57)) || ((x <= 66 && 51 <= x) && y <= 36)) || ((x <= 49 && 49 <= x) && y <= 49)) || ((20 <= x && y <= 20) && x <= 20)) || ((x <= 75 && y <= 27) && 51 <= x)) || ((x <= 11 && 11 <= x) && y <= 11)) || ((7 <= x && y <= 7) && x <= 7)) || ((y <= 26 && x <= 76) && 51 <= x)) || ((42 <= x && y <= 42) && x <= 42)) || ((x <= 48 && y <= 48) && 48 <= x)) || ((y <= 14 && 51 <= x) && x <= 88)) || ((x <= 31 && 31 <= x) && y <= 31)) || ((x <= 77 && y <= 25) && 51 <= x)) || ((y <= 24 && x <= 78) && 51 <= x)) || ((23 <= x && x <= 23) && y <= 23)) || ((y <= 4 && 51 <= x) && x <= 98)) || ((x <= 89 && 51 <= x) && y <= 13)) || ((y <= 1 && 51 <= x) && x <= 101)) || ((x <= 36 && 36 <= x) && y <= 36)) || ((x <= 71 && 51 <= x) && y <= 31)) || ((y <= 38 && x <= 38) && 38 <= x)) || ((y <= 12 && x <= 12) && 12 <= x)) || ((6 <= x && y <= 6) && x <= 6)) || ((x <= 53 && y <= 49) && 51 <= x)) || ((x <= 13 && y <= 13) && 13 <= x)) || ((39 <= x && y <= 39) && x <= 39)) || ((y <= 45 && x <= 45) && 45 <= x)) || ((19 <= x && x <= 19) && y <= 19)) || ((46 <= x && y <= 46) && x <= 46)) || ((x <= 84 && y <= 18) && 51 <= x)) || ((x <= 82 && y <= 20) && 51 <= x)) || ((17 <= x && y <= 17) && x <= 17)) || ((x <= 30 && y <= 30) && 30 <= x)) || ((51 <= x && x <= 79) && y <= 23)) || ((x <= 14 && y <= 14) && 14 <= x)) || ((x <= 68 && 51 <= x) && y <= 34)) || ((2 <= x && y <= 2) && x <= 2)) || ((y <= 40 && 40 <= x) && x <= 40)) || ((21 <= x && x <= 21) && y <= 21)) || ((x <= 85 && y <= 17) && 51 <= x)) || ((y <= 47 && x <= 55) && 51 <= x)) || ((x <= 16 && y <= 16) && 16 <= x)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 10 && x <= 10) && 10 <= x)) || ((y <= 28 && x <= 74) && 51 <= x)) || ((x <= 47 && y <= 47) && 47 <= x)) || ((x <= 56 && y <= 46) && 51 <= x)) || ((x <= 3 && y <= 3) && 3 <= x)) || ((x <= 86 && 51 <= x) && y <= 16)) || ((51 <= x && y <= 22) && x <= 80)) || ((y <= 21 && x <= 81) && 51 <= x)) || ((y <= 24 && 24 <= x) && x <= 24)) || ((y <= 33 && 51 <= x) && x <= 69)) || ((y <= 7 && x <= 95) && 51 <= x)) || ((y <= 43 && 51 <= x) && x <= 59)) || ((y <= 26 && x <= 26) && 26 <= x)) || (((0 <= x && 0 <= y) && y <= 0) && x <= 0)) || ((y <= 18 && x <= 18) && 18 <= x)) || ((y <= 48 && x <= 54) && 51 <= x)) || ((50 <= x && x <= 50) && y <= 50)) || ((5 <= x && x <= 5) && y <= 5)) || ((x <= 35 && y <= 35) && 35 <= x)) || ((8 <= x && x <= 8) && y <= 8)) || ((34 <= x && x <= 34) && y <= 34)) || ((y <= 5 && 51 <= x) && x <= 97)) || ((x <= 67 && y <= 35) && 51 <= x)) || ((y + 1 <= 0 && x <= 103) && 51 <= x)) || ((x <= 91 && y <= 11) && 51 <= x)) || ((y <= 15 && x <= 15) && 15 <= x)) || ((x <= 90 && y <= 12) && 51 <= x)) || ((x <= 63 && y <= 39) && 51 <= x)) || ((x <= 64 && y <= 38) && 51 <= x)) || ((x <= 33 && y <= 33) && 33 <= x)) || ((x <= 73 && y <= 29) && 51 <= x)) || ((x <= 61 && 51 <= x) && y <= 41)) || ((y <= 15 && x <= 87) && 51 <= x)) || ((y <= 37 && x <= 37) && 37 <= x) RESULT: Ultimate proved your program to be correct! [2022-11-23 15:46:27,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84ab6d26-6cab-4709-87e6-17a76ec3f0de/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE